Bobbin-winder



(N oModeL) v I G, w. & H. RANDALL. v

BOBBIN WINDER.

No. 474,924. Patented May 1 7, 189.2.

7452 2268066 I five/250m. V George WRIMZQZZ.

Guam-12 m for winding a bobbin.

UNITED STATES ATENT FFICE.

GEORGE WV. RANDALL AND GILBERT H. RANDALL, OF PLYMPTON, MA SSACHUSETTS.

BOBBlN-WINDER.

*BPECIFICA'IION forming part of Letters Patent No. 474,924, dated May1'7, 1892.

Application filed October 26 1891.

To all whom it may concern.-

Be it known that we, GEORGE WV. RANDALL and GILBERT H. RANDALL, citizensof the United States, residing at Plympton, in the county of Plymouthand State of Massachusetts, have invented certain new and usefulImprovements in Bobbin-finders; and we do i hereby declare the followingto be a full, clear,

bin is filled the thread is severed, while the bobbin is stopped fromrotating. The several component parts and their respective functionswill be more fully hereinafter described.

The drawings accompanying this specification represent, in Figure 1,aperspective view of the mechanism embodying our invention for windingbobbins applied to sewing-ma chines. Fig. 2 is an elevation of that sideof the mechanism adjacent to the goose-neck of the machine, the cuttingimplement being I omitted, the several parts being positioned Fig. 3 isa similar 1 view as in Fig. 2 with the parts in position after thefilling of a bobbin. Fig. lis a side elevation of the rod for operatingthe cutting device. Fig. 5 is an end view of the gooseneck, in partshowing the relative positions of the thread-severing implement and itscontrolling-rod.

In said drawings, 2 represents a portion of the work-plate of asewingmachine surmounted with a goose-neck 3, provided at its rear endwith a boss 4, through which extends the main shaft (not shown) of themachine. Upon said shaft is mounted the pulley 5, actuated by the'belt6. The spool is shown at 7, the thread at 7', and a tension at S.

Adjustably mounted upon the boss 4, as shown, by the slot 9 auditsset-screw is positioned a shield 10 to cover the belt. Laterally andextending inwardly or toward the Serial No. 409,814. (No model.)

which is loosely hung an operating-lever 13, the position of which willbe explained more fully hereinafter. Furthermore, 'a hanger-arm orpivoted journal-support 14 is secured at 15 to the end of said shieldand is pressed upgoose-neck is affixed a short pin 12, upon ward by aspring 16, one extremity of the lat- I ter bearing against the shield,the other against the under side of the arm 14 to normally hold it in anupraised position, as in Fig. 3. T-ransversely of said hanger-arm and atthe free extremity thereof is placed the bobbin-spindle 17, upon one endof which is fastened a grooved wheel. 18, while at the other end, whichprojects beyond the said hanger, is to be placed the bobbin 19. Theupper edge of the hanger-arm is formed with an inclined straight faceand a recessed portion 20 to receive a pendent spur 21. Moreover, whenthe operating-lever is depressed (see Fig. 2) and the spur engages therecess the hanger-arm is swung down and back and the grooved wheel isheld in contact against the belt 6, the friction causing thebobbinspindle and bobbin thereupon to revolve.

By reference to Fig. 1 it will be seen that the wheel 18 is in alignmentwith the belt 6,

while the operating-lever 13 bears the same relation to the bobbin.Hence when the latter is empty and the several parts are as shown inFig. 2 the lever rests upon the center part of the bobbin. As the bobbinfills this lever is raised at its free end, while the overlap of thespur 21 in'the recess 20 is such that said parts are disengaged at themoment the bobbin is completely filled. Thus at the completion of thisact the spring 16 is free to rock the hanger-arm upward, as shown inFig. 3, while the wheel is thereby removed from contact with thedriving-belt and the bobbin comes to rest.

In connection with the above act of winding and filling it becomesnecessary to sever the thread 7 from the spool 7, and this we effect asfollows: Attached to the end of the goose-neck at a point beneath theboss 4 is a plate formed with a horizontal lip 23, in which is cut alongitudinal opening 24.. Furthermore, affixed to said plate is a fixedcutterbar 25, to which is pivoted a movable blade 26, forming athread-cutting implement. A

spring 27 serves to hold the blades normally shut.

To provide for the closing of the cutting implement and severance of thethread at the moment the bobbin is filled, an operatingrod 28 isprovided. Said rod is pivotally attached to a lug 14', carried by thefree end of the hanger arm or lever 14:, and extends downwardly throughthe opening 24 in the lip 23. A bend or oifset 29 or a plate of suitableshape to serve the purpose of a cam is secured to said rod and serves toengage the free noncutting end of the movable bar26 and holds the latteropen against the pressure of the spring 27. Said rod is thus adjusted toreciprocate in a vertical path coincident with the rocking of thehanger-arm to which it is attached. Thus at the time an empty bobbin isto be filled and when the actuating-lever 13 is depressed to hold thegrooved wheel against the belt 6, and thereby impart rotation to thebobbin,-suc-h act forces the rod downwardly, the bent portion or offset29 pushing the free end of the movable bar outwardly and opening thecutting implement. Conversely upon filling of the bobbin disengagementof the spur 21 from the recess in the hanger-arm and upward oscillationof the latter occur, the rod being lifted suddenly, while a quickclosing action of the movable bar is allowed, thereby severing thethread.

By the arrangement of the above-described parts two results areaccomplished simultaneously with the filling of the bobb'in-namely,cutting of the thread and cessation in the movement of the bobbin.

The operation is as follows: In the act of filling a bobbin, therelative positions of the parts being shown in Fig. 1, thespecialpositions of such parts are as follows: The lever 13 and hanger arm orlever 14 are as in Fig. 3, while the cutting implement is closed. Abobbin is now placed upon the spindle 17 and the end of the leverdepressed until the spur 21 engages in the recess 20. The wheel 18 isthereby brought into frictional contact with the belt 6, and theseseveral parts are now interlocked and rigid in position, as shown inFig. 2. The downward rocking or swinging movement of the hanger arm orlever 14 has caused the rod 28 to advance down through the opening 24,while the offset 29 wipes against the free end of the movablebar of thecutting implement, which is now held open. The thread 7 passes acrossand between the blades. (See Fig. 5.) Rotation of the bobbin nowcommences and continues, the winding of the thread thereupon graduallyraising the free end of the said lever until the spur is disengaged fromthe recess 20 in the hanger-arm. At this same moment the spring 16thrusts the hanger-arm upwardly to its original position, (see Fig. 3,)while the rod 28 retreats from the aperture 24 and the thread issevered. Coincident with the upward movement of the hanger-arm the wheel18 is separated from contact with the belt 6.

The lever holds the bobbin on its windingspindle when in the act offilling, while a light spring 30 in Fig. 2 retains it when the lever isthrown off or after the bobbin is filled, in case it is not removed. Asmall pin 31 (see Fig. 3) engages withthe bobbin to cause the latter torotate in unison with said spindle.

What we claim is 1. In a bobbin-winder, the combination,

with an oscillating hanger arm or lever and a revoluble bobbin-spindlemounted thereupon, of a locking-lever engaging with said hanger arm orlever and actuated by the accumulating thread, a cutting implementthrough which said thread passes, and a rod through which the action ofsaid implement is con- I pivoted upon said shield adapted to engage saidhanger-arm and operated by the accumulating thread upon the bobbin torelease the hanger-arm, combined with a cuttingimplement and anoperating-rod connected with the hanger-arm and actuated by the movementof the latter to release the cutting implement at the time ofoscillation of said hangerarm consequent upon the filling of the bobbin,substantially as explained.

3. The combination,withasewing-machine, a driving-belt, its stationaryshield, an oscillating spring-actuated hanger-arm carrying thebobbin-spindle and driving-wheel, and locking-lever pivoted upon saidshield and controlled by the thread accumulating on the bobbin, of thecutting implement and interconnecting means between said implement andthe oscillating hanger-arm whereby the cutting implement is caused toact to sever the thread simultaneously with the completion of thefilling of the bobbin and the release of the hangerarm, substantially asstated.

el. The combination, with an oscillating hanger-arm, the revolublebobbin-spindle at its free end and furnished with adrivingwheel, and thelocking-lever released by the accumulating thread, of, a cuttingimplementhaving a movable member, its actuating-rod pivoted upon thehanger-arm, an apertured lip in which said rod is adapted toreciprocate, and the offset upon said rod to engage the movablemember ofthe cutting implement, substantially as set forth and stated.

In testimony whereof we affix our signatures in presence of twowitnesses.

GEORGE WV. RANDALL. GILBERT H. RANDALL. Witnesses:

LAURA W. KNOWLES, WILLIAM PERKINS.

